Omega Engineering DAQ-12 user manual

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CHx-, CHx+ : Analog inputs to the analog to digital converter. When using differential input mode, eight input channels are available (CH0+ to CH7+). When using single-ended inputs, 16 channels are available (CH0+ to CH15+). The first eight channels are input through the connections marked CH0+ to CH7+ and the second eight channels through CH0- to CH7-.

AOUT0, AOUT1: Analog outputs from the digital to analog converters. Polarity and maximum amplitude depend on the jumper settings and voltage references. Output resistance of the analog outputs is typically 70 ohms.

VREF0, VREF1: External voltage references for the digital to analog converters. Input range is 0 to 5.0 volts with a no-load input resistance of 7.5 Kohms typical.

EXT CLK, EXT TRG, EXT INT: External clock, trigger, and interrupt inputs respectively. Inputs are TTL compatible.

DOUT0, DOUT1, DOUT2, DOUT3: TTL compatible digital output lines.

DIN0, DIN1, DIN2, DIN3: TTL compatible input lines.

DAQ-12 Users Manual

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Contents 15,1*,1 WARRANTY/DISCLAIMER Manufacturers Name Manufacturer’s AddressApplication of Council Directive Standards to which Conformity is DeclaredServicing North America For immediate technical or application assistanceServicing Europe Page Table of Contents Introduction List of Figures and Tables Installation DAQ-12 Specifications Jumper J1 Configuration Analog to Digital ConverterDisable Pre-Scaler Enable Pre-Scaler Factory default Recommended Input Ranges and Gain Settings Code Digital to Analog Converters Voltage Unipolar Bipolar CodeChannel Bipolar Gain =Digital Input/Output Base AddressClock Selection Internal Clock External Clock Trigger Selection Start of ConversionDirect Memory Access 10. Jumpers J8 and J9 Configuration DackInterrupts External InterruptExternal Connections Page Register Description Control Word RegisterINT2 INT1 INT0 Description Start of Conversion Register 3 A/D Converter Data RegisterMulti-Function Timer Register 4 D/A Converter 0 Register5 D/A Converter 1 Register Clock Rate Register low wordProgramming the 8254 Counter/Timer Counter 1 Clock rate register high word Version January 28
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